Sam4s ELLIX 20 - Page 47

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 Parallel Interface (IEEE 1284)
Pin Source Compatibility Mode Nibble Mode Byte Mode
1 Host nStrobe HostClk HostClk
2 Host / Printer Data 0 (LSB) - Data 0(LSB)
3 Host / Printer Data 1 - Data 1
4 Host / Printer Data 2 - Data 2
5 Host / Printer Data 3 - Data 3
6 Host / Printer Data 4 - Data 4
7 Host / Printer Data 5 - Data 5
8 Host / Printer Data 6 - Data 6
9 Host / Printer Data 7 (MSB) - Data 7(MSB)
10 Printer nAck PtrClk PtrClk
11 Printer Busy
PtrBusy
/Data3,7
PtrBusy
12 Printer Perror
AckDataReq
/Data2,6
AckDataReq
13 Printer Select
Xflag
/Data1,5
Xflag
14 Host nAutoFd HostBusy HostBusy
15 - NC NC NC
16 - GND GND GND
17 - FG FG FG
18 Printer Logic-H Logic-H Logic-H
19~30 - GND GND GND
31 Host nInit nInit nInit
32 Printer nFault
nDataAvail
/Data0,4
nDataAvail
33 - GND ND ND
34 Printer DK_Status ND ND
35 Printer +5V ND ND
36 Host nSelectIn 1284-Active 1284-Active